Top Principal Software Engineer Jobs in Chicago, IL

The Principal Software Engineer will lead technical direction, mentor engineers, and oversee project execution while implementing backend services in Python and React frontends. Responsibilities include driving innovation, shaping architecture, maintaining high engineering standards, and contributing to the operational lifecycle of features.

Lead the design and implementation of mortgage technology features, mentor engineers, and collaborate across teams to improve customer experiences.

Design and develop web applications, mentor teammates, shape architectural decisions, write clean code, conduct testing, and troubleshoot issues.

The Principal Software Engineer will lead AI integration into production, shape technical direction, mentor engineers, and ensure system reliability, working with full stack technologies.

The Principal Software Engineer II will lead and contribute to Elasticsearch's Storage Engine team, focusing on efficient data querying, indexing, and developing Timeseries solutions. This role requires strong technical leadership, collaboration across teams, and expertise in Java and Elasticsearch.

The Principal Software Engineer will maintain and enhance cross-platform GUI applications, develop Python APIs, manage CI/build systems, and oversee AWS infrastructure for M-Star's CFD software, contributing to scientific innovation across multiple industries.

The Principal Software Engineer designs prototypes, implements solutions, analyzes technologies, and provides development support, playing a key role in improving customer experience for federal clients.

The Principal Software Engineer will lead development for Dataminr's Knowledge Platform, focusing on AI and data engineering to enhance knowledge graphs and alerting capabilities.

The Principal Software Engineer will lead technical development for Breeze Assistant, focusing on AI integration with HubSpot CRM and experimentation with LLM capabilities, ensuring system reliability and mentorship within the engineering team.

Design and develop software for a Linux-based networking system, collaborating with hardware and cloud teams for reliable vehicle communication.

The Principal Software Engineer will lead the design and implementation of complex software systems, mentor team members, and drive innovation in software solutions with a strong focus on user experience and engineering best practices.

The Principal Software Engineer will lead and shape the Data Platform's technical direction, drive architectural standards, mentor teams, and enhance HubSpot's AI-powered CRM capabilities.

The Principal Software Engineer will design and build scalable core technology systems for Lime's fleet and mentor a team of engineers. Responsibilities include defining technical strategy and collaborating cross-functionally to improve technology and user experiences.

The Principal Software Engineer leads software quality, performance, and scalability, ensuring high standards while developing solutions alongside teams. They also mentor others and oversee technical quality across projects.

Lead cross-functional teams in software engineering, develop technical strategies, mentor staff, and design solutions to enhance financial product offerings.

The Principal Software Engineer will lead design and development of software solutions, mentor teams, and ensure alignment with company's tech strategy while driving innovation in FinTech and cloud services.

Lead the design and implementation of scalable cloud infrastructure while mentoring engineers and aligning solutions with business objectives.

The Architect DevOps Engineer will define platform architecture, drive operational excellence, and lead initiatives in CI/CD, cloud scalability, and DevOps practices, mentoring staff and influencing strategic decisions.

The Principal Software Engineer will lead architectural direction, integrate AI capabilities, mentor engineers, and tackle complex technical challenges for scalable systems.

Lead the architecture of Commerce Hub by defining core domain models, building intricate systems, and mentoring engineers while influencing product strategy.

The Principal Software Engineer leads project development, collaborates on architecture, mentors engineers, and contributes to both server-side and client-side coding while enhancing system performance and security.

The Principal Software Engineer will lead the design and implementation of scalable software solutions while mentoring team members and collaborating with cross-functional teams to align technology with business goals.

As a Principal Software Engineer, you'll drive technical architecture, mentor teams, and lead software development projects while contributing to code and best practices.

Lead the design and development of scalable backend systems, mentor teams, optimize system performance, and ensure robust API integrations.

The Principal Software Engineer will develop, integrate, and test software products, collaborating within a high-performing multi-site team, while managing project communications and technical solutions.